Reptile Temperature Gradient Calculator

Basking, warm and cool zone targets for your enclosure.

Instant results✓ Source-backed
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How this is calculated

Reptiles regulate body temperature by moving along a heat gradient. Measure with a digital probe thermometer at substrate level, plus an infrared gun on the basking surface; use a thermostat on every heat source.

Source-based educational tool; not independently reviewed by a veterinarian. Cited guidance does not imply endorsement by its authors.

Formula

Gradient (°/10 cm) = (warm max − cool min) ÷ length cm × 10

Assumptions

  • •Linear heat fall-off from a single end-mounted heat source
  • •Room temperature 20–24 °C

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